Prime Minister Harper has numerically surpassed Trudeau for the first time in four months as preferred choice for PM, according to the weekly Nanos Party Power Index

In the latest weekly tracking 32 per cent of Canadians say Harper is their preferred choice for PM followed by Justin Trudeau at 30 per cent, Thomas Mulcair at 20 per cent and Elizabeth May at four percent (14 per cent were unsure).

In the national index tracking, the Liberals are at 56 points out of 100, the Conservatives at 54 points, the NDP are at 51 points, the Green Party at 31 points and the BQ are at 28 points (QC only) respectively. For the first time in a year, the Tories have surpassed the Liberals in the index in the vote rich province of Ontario.

Nanos is a research organization providing insight and strategic advice to decision-makers. It is the research firm of record for Bloomberg New's weekly Canadian consumer sentiment tracking, known as the Bloomberg Nanos Canadian Confidence Index.

The data is based on random telephone interviews with 1,000 Canadians, using a four-week rolling average of 250 respondents each week, 18 years of age and over. The interviews are compiled into a four-week rolling average of 1,000 interviews where each week, the oldest group of 250 interviews is dropped and a new group of 250 interviews is added. The latest research was conducted over the four-week period after Nov. 7th.